Manuscript Summary: In addition to the Rosarium Jesu et Mariae by the Belgian Carthusian Jacobus van Gruitrode, this small-format codex from the Carthusian Monastery of Basel contains letters by two representatives of the Devotio Moderna, Florens Radewijns and Geert Groote, as well as excerpts from the Bible and from commentaries, various prayers, and diverse shorter and longer fragments of varying content. (mue)